/* USER CODE BEGIN Header */
/**
 ******************************************************************************
 * @file           : main.c
 * @brief          : Main program body
 ******************************************************************************
 * @attention
 *
 * Copyright (c) 2025 STMicroelectronics.
 * All rights reserved.
 *
 * This software is licensed under terms that can be found in the LICENSE file
 * in the root directory of this software component.
 * If no LICENSE file comes with this software, it is provided AS-IS.
 *
 ******************************************************************************
 */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
#include "dma.h"
#include "i2s.h"
#include "usart.h"
#include "gpio.h"

/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
#include "stdio.h"
#include "string.h"
/* USER CODE END Includes */

/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
/* USER CODE END PTD */

/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */

/* USER CODE END PD */

/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */

/* USER CODE END PM */

/* Private variables ---------------------------------------------------------*/

/* USER CODE BEGIN PV */

#define BUFFER_SIZE (2048)
static uint32_t dma[BUFFER_SIZE];
static uint32_t dma1[BUFFER_SIZE];
uint32_t val24;
int val32;
/* USER CODE END PV */

/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */

/* USER CODE END PFP */

/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */

/* USER CODE END 0 */

/**
 * @brief  The application entry point.
 * @retval int
 */
int main(void)
{

    /* USER CODE BEGIN 1 */

    /* USER CODE END 1 */

    /* MCU Configuration--------------------------------------------------------*/

    /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
    HAL_Init();

    /* USER CODE BEGIN Init */

    /* USER CODE END Init */

    /* Configure the system clock */
    SystemClock_Config();

    /* USER CODE BEGIN SysInit */

    /* USER CODE END SysInit */

    /* Initialize all configured peripherals */
    MX_GPIO_Init();
    MX_DMA_Init();
    MX_I2S2_Init();
    MX_USART1_UART_Init();
    /* USER CODE BEGIN 2 */
    uint8_t sa = 0;
    HAL_Delay(10);
    // sa = HAL_I2S_Receive(&hi2s2, (uint16_t *)dma, BUFFER_SIZE, 0xff);
    // printf("star:%d\n", sa);
    // for(uint32_t i = 0 ; i < BUFFER_SIZE; i++)
    // {
    //   printf("data%d: %04x\n", i, dma[i]);
    // }
    printf("start\n");
    sa = HAL_I2S_Receive_DMA(&hi2s2, (uint16_t *)dma, BUFFER_SIZE);
    HAL_Delay(1000);
    printf("star1:%d %04x %04x %04x %04x\n", sa, dma[1508], dma[1509], dma[1500], dma[1501]);

    sa = HAL_I2S_Receive_DMA(&hi2s2, (uint16_t *)dma1, BUFFER_SIZE);
    HAL_Delay(1000);
    printf("star2:%d %04x %04x %04x %04x\n", sa, dma1[1508], dma1[1509], dma1[1500], dma1[1501]);

    static uint8_t run_flag = 1;
    /* USER CODE END 2 */

    /* Infinite loop */
    /* USER CODE BEGIN WHILE */
    while (1) {
        // sa = HAL_I2S_Receive_IT(&hi2s2, (uint16_t *)dma, BUFFER_SIZE);
        HAL_Delay(100);
        printf("star:%d %04x %04x %04x %04x\n", sa, dma[2048], dma[2049], dma[2050], dma[2051]);
        printf("%d: | %04x | %04x | %04x | %04x | %04x | %04x | %04x | %04x |\n", HAL_I2S_GetState(&hi2s2), dma1[2000], dma1[2001], dma1[2002], dma1[2003], dma1[2004], dma1[2005], dma1[2006], dma1[2007]);
        HAL_GPIO_TogglePin(LED_R_GPIO_Port, LED_R_Pin);
        // HAL_Delay(200);
        // HAL_GPIO_TogglePin(LED_B_GPIO_Port, LED_B_Pin);
        if(HAL_GPIO_ReadPin(KEY_GPIO_Port, KEY_Pin))
        {
            run_flag = !run_flag;
            printf("Run : %d!\n", run_flag);
            if(run_flag) HAL_I2S_DMAResume(&hi2s2);
            else HAL_I2S_DMAPause(&hi2s2);
            HAL_Delay(400);
        }
        /* USER CODE END WHILE */

        /* USER CODE BEGIN 3 */
    }
    /* USER CODE END 3 */
}

/**
 * @brief System Clock Configuration
 * @retval None
 */
void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct = {0};
    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};

    /** Configure the main internal regulator output voltage
     */
    HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST);

    /** Initializes the RCC Oscillators according to the specified parameters
     * in the RCC_OscInitTypeDef structure.
     */
    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
    RCC_OscInitStruct.HSEState       = RCC_HSE_ON;
    RCC_OscInitStruct.PLL.PLLState   = RCC_PLL_ON;
    RCC_OscInitStruct.PLL.PLLSource  = RCC_PLLSOURCE_HSE;
    RCC_OscInitStruct.PLL.PLLM       = RCC_PLLM_DIV1;
    RCC_OscInitStruct.PLL.PLLN       = 40;
    RCC_OscInitStruct.PLL.PLLP       = RCC_PLLP_DIV2;
    RCC_OscInitStruct.PLL.PLLQ       = RCC_PLLQ_DIV2;
    RCC_OscInitStruct.PLL.PLLR       = RCC_PLLR_DIV2;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) {
        Error_Handler();
    }

    /** Initializes the CPU, AHB and APB buses clocks
     */
    RCC_ClkInitStruct.ClockType      = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource   = RCC_SYSCLKSOURCE_PLLCLK;
    RCC_ClkInitStruct.AHBCLKDivider  = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;

    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4) != HAL_OK) {
        Error_Handler();
    }
}

/* USER CODE BEGIN 4 */

unsigned cb_cnt = 0, cb_cnt1 = 0;
// I2S接收完成回调函数
void HAL_I2S_RxCpltCallback(I2S_HandleTypeDef *hi2s)
{
    
    if (hi2s == &hi2s2) {
        // printf("it\n");
        HAL_GPIO_TogglePin(LED_B_GPIO_Port, LED_B_Pin);
        cb_cnt++; // 回调次数计数
        // 将两个32整型合并为一个
        // dat32 example: 0000fffb 00004f00
        val24 = (dma[0] << 8) + (dma[1] >> 8);
        // 将24位有符号整型扩展到32位
        if (val24 & 0x800000) { // negative
            val32 = 0xff000000 | val24;
        } else { // positive
            val32 = val24;
        }
        // 以采样频率的十分之一，串口发送采样值
        if (cb_cnt % 100 == 0)
            printf("1\r\n", val32);
    }
    
}

void HAL_I2S_RxHalfCpltCallback(I2S_HandleTypeDef *hi2s)
{
    
    if (hi2s == &hi2s2) {
        // printf("it\n");
        HAL_GPIO_TogglePin(LED_B_GPIO_Port, LED_B_Pin);
        cb_cnt1++; // 回调次数计数
        // 将两个32整型合并为一个
        // dat32 example: 0000fffb 00004f00
        val24 = (dma[0] << 8) + (dma[1] >> 8);
        // 将24位有符号整型扩展到32位
        if (val24 & 0x800000) { // negative
            val32 = 0xff000000 | val24;
        } else { // positive
            val32 = val24;
        }
        // 以采样频率的十分之一，串口发送采样值
        if (cb_cnt1 % 100 == 0)
            printf("2\r\n", val32);
    }
}

/* USER CODE END 4 */

/**
 * @brief  This function is executed in case of error occurrence.
 * @retval None
 */
void Error_Handler(void)
{
    /* USER CODE BEGIN Error_Handler_Debug */
    /* User can add his own implementation to report the HAL error return state */
    __disable_irq();
    while (1) {
    }
    /* USER CODE END Error_Handler_Debug */
}
#ifdef USE_FULL_ASSERT
/**
 * @brief  Reports the name of the source file and the source line number
 *         where the assert_param error has occurred.
 * @param  file: pointer to the source file name
 * @param  line: assert_param error line source number
 * @retval None
 */
void assert_failed(uint8_t *file, uint32_t line)
{
    /* USER CODE BEGIN 6 */
    /* User can add his own implementation to report the file name and line number,
       ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
    /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */
